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Add 15/40 and 20/63

15/40 + 20/63 is 349/504.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 63 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 40 × 63 = 2520,
    15/40 = 15 × 63/40 × 63 = 945/2520
  3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
    20/63 = 20 × 40/63 × 40 = 800/2520
  4. Add the two like fractions:
    945/2520 + 800/2520 = 945 + 800/2520 = 1745/2520
  5. 1745/2520 simplified gives 349/504
  6. So, 15/40 + 20/63 = 349/504

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